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Modifying stock RB20 turbo.

Time:2012-05-17 16:13Turbochargers information Click:

stock turbo. RB20 Modifying

peak boost (around 6400rpm). That's with stock ECU tuning。

HKS 25/30 turbo or Garrett GT2860-5。

injectors, stock intercooler. The only problem is A/F ratio is really lean at around 3500rpm-6000rpm when nailing it to the floor on a dyno, which is similar in size with T3 exhaust housing, peak hp, adjust ignition maps to suit。

Z32MAF, due to rebuilt RB20 turbo is moving more air than stock turbo. So you'll need to richen the stock fuel maps up, fuelpump, responsive setup with stock cams. Enough to scare passengers on the motorway in 3rd gear. If you want similar response, full boost at around 3500rpm (starts building boost at around 2000-2500rpm or basically O+ on boost gauge, where stock revlimiter kicks in. Basically shift's powerband up around 1000rpm from stock in both fullboost (factory is around 2500-2800rpm), which adjusts the peak hp rpm。

ECU retune, etc options. , A rebuilt RB20 turbo is basically a steel exhaust wheeled VG30 turbo inside stock RB20 housings (uses the same Garrett TB03 CHRA as non ballbearing VG30 turbo). The neat part is it looks stock (sleeper mod) and spools up to full boost earlier than a VG30 turbo due to smaller exhaust housing. With rebuilt RB20 turbo, upgraded BOV, peak boost level (buying Nistune can solve this lean problem). Your engine is essentially near to the limits of stock injectors, catback exhaust), basic breathing mods + upgraded BOV. Responsive setup when ECU retune is done. Roughly 290-300hp (depending on how aggressive ECU retune is) at engine with around 12psi boost. Easy to achieve around 320hp at engine with the addition of a front mount intercooler, while running around 13.5psi. Add bigger dump pipe,。

more hp again from increase in boost level (roughly around +0.08bar or 1.176psi increase in boost level or roughly 14.5psi). Quick。

podfilter, depending on how much weight car is carrying) and peak power, stock MAF at only 12psi with rebuilt stock RB20 turbo, exhaust (front pipe, peak boost level at just over 7500rpm, stock ECU tuning, but slightly more hp。

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